电力信号自适应滤波测量的收敛性  

Study on Convergence of Adaptive Filtering Measurement for Power Signal

作　　者：李惠宇[1] 于盛林[1] 季侃[2] 罗晓莉[2] 

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市210016 [2]国网南京自动化研究院/南京南瑞集团公司,江苏省南京市210003

出　　处：《电力系统自动化》2007年第22期73-76,98,共5页Automation of Electric Power Systems

基　　金：江苏省科技攻关项目(BE2004018)~~

摘　　要：采用非线性系统稳定理论,对电力信号自适应滤波测量法稳定收敛性进行了分析和论证,导出其稳定收敛的约束条件,并给出自适应滤波测量法的设计方法。传统的电力稳态测量算法是开环算法,非频率同步采样和数据扰动时可造成误测。闭环的自适应滤波测量法可分析非频率同步采样、非整次谐波等造成的非周期正弦波采样数据,判别和修正采样失真,准确、可靠地实现电力系统稳态的测量。Based on the nonlinear system theory, the stability and convergence of adaptive filtering measurement for power signals are analyzed and demonstrated to find its convergent condition and to design an appropriate adaptive filtering measurement method. Traditional steady measurement is an open-loop method and may misjudge in case of asynchronous sample and signal disturbances. The adaptive filtering measurement method is a close-loop method and it can be employed to deal with non-sin and non-period data, caused by asynchronous sample and non-integer harmonics, and to estimate and correct distortion. The adaptive filtering measurement method can be applied in accurate and reliable measurement in the steady power system.

关 键 词：自适应滤波 非线性系统 庞加莱映射 稳定收敛 波形畸变 

分 类 号：TM711[电气工程—电力系统及自动化] TM935